Update 2021-08-30
Non-zero-diff, generally within round-off of the previous release.
(The new version of MAPL includes a bug-fix that is non-zero-diff for OPS GOCART.)
All repositories are now in line with GEOSgcm v10.19.3, with the exception of MAPL which required a bug fix. All chemistry modules are handled properly in the setup script, except GEOS-Chem which needs a bit of customization in the experiment (both here and in GCM as well).
Complete set of notes, for the GCM components: https://github.com/GEOS-ESM/GEOSgcm/releases/tag/v10.19.3